CN102262337A - Interchangeable lens, imaging apparatus, imaging system, method for controlling interchangeable lens - Google Patents

Interchangeable lens, imaging apparatus, imaging system, method for controlling interchangeable lens Download PDF

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Publication number
CN102262337A
CN102262337A CN2011101313194A CN201110131319A CN102262337A CN 102262337 A CN102262337 A CN 102262337A CN 2011101313194 A CN2011101313194 A CN 2011101313194A CN 201110131319 A CN201110131319 A CN 201110131319A CN 102262337 A CN102262337 A CN 102262337A
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China
Prior art keywords
power
parts
interchangeable lens
imaging device
supply power
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Granted
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CN2011101313194A
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Chinese (zh)
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CN102262337B (en
Inventor
中村真备
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Sony Corp
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Sony Corp
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/65—Control of camera operation in relation to power supply
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H04N23/663—Remote control of cameras or camera parts, e.g. by remote control devices for controlling interchangeable camera parts based on electronic image sensor signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2217/00—Details of cameras or camera bodies; Accessories therefor
    • G03B2217/007—Details of energy supply or management

Abstract

An interchangeable lens includes an acquiring section that acquires an amount of supply power from an imaging apparatus to which the interchangeable lens is attached, and operation information related to an operation of the imaging apparatus in a period during which the supply power is supplied, and a determining section that determines power to be distributed to a plurality of driving sections that drive a plurality of optical members, for each of the driving sections, on the basis of the acquired amount of supply power and the acquired operation information.

Description

Imaging device, imaging system, interchangeable lens and control method thereof
Technical field
The present invention relates to interchangeable lens, specifically, relate to by imaging device to its provide electric power interchangeable lens, imaging device, imaging system, control interchangeable lens method and be used to cause computing machine to carry out the program of described method.
Background technology
In recent years, for example the imaging device of Digital Still Camera is widely used, and the subject that described Digital Still Camera is taken people for example to be producing photographic images, and the photographic images that produces like this of record.As this imaging device, the imaging system (for example, single lens reflex camera) that makes it possible to change according to purposes lens unit (interchangeable lens) is widely used.
This interchangeable lens comprises a plurality of driver parts (for example, actuator) that are used to drive built-in optical member (for example, condenser lens and aperture).For the imaging device that is attached with this interchangeable lens by use carries out imaging operation, sometimes need with the more high-power interchangeable lens that is provided to, to drive a plurality of driver parts from the imaging device.
On the other hand, be attached with aspect the imaging device of interchangeable lens so equally, its power consumption becomes bigger according to the operation types of carrying out (operator scheme) during imaging operation.When the interchangeable lens power demand became big when the imaging device is just being carried out the more powerful operation of consumption, described power consumption surpassed the allowable value of the power that power supply can provide sometimes, makes it that suitable power can not be provided.When (for example) interchangeable lens was carried out initialization procedure, occurring that interchangeable lens and imaging device all become must more powerful this class situation.
Therefore, as the imaging device that is designed to carry out suitable electric power supply, for example, a kind of imaging device has been proposed, this imaging device suppresses the power consumption peak value in the interchangeable lens initialization procedure, make power consumption be no more than predetermined value (for example, referring to the open No.2009-122287 (Fig. 1) of the uncensored patented claim of Japan).
Summary of the invention
In the imaging device of mentioning, as long as do not forbid that the processing of being discussed stops, then beginning initialization procedure in the above, and forbid processing that power consumption surpasses predetermined value till initialization procedure is finished, thereby be suppressed to the peak value that the picture rating of set consumes.
Yet, during initialize process, this imaging device all needs at interchangeable lens and imaging device can not provide suitable power under the situation of more high-power (for example, during the photographic images).
Desired is from imaging device suitably with power division to driver part.
According to embodiments of the invention, a kind of interchangeable lens, its control method are provided and have caused computing machine to carry out the program of described method.This interchangeable lens comprises: obtain parts, the described parts that obtain obtain the amount of supply power from the imaging device that is attached with described interchangeable lens, and obtain the relevant operation information of operation with described imaging device during described supply power is provided; And definite parts, described definite parts are based on the amount of the described supply power that is obtained and the operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.This can produce following effect: based on the amount and the definite power that will be assigned to a plurality of driver parts that drive a plurality of optical components of operation information of supply power.
Among the embodiment that mentions in the above, in the time will driving described optical component, described definite parts determine to be assigned to the power of each driver part that drives each optical component.This will produce following effect: the power of having determined to be assigned to each driver part that drives each optical component.
Among the embodiment that mentions in the above, interchangeable lens also comprises: holding member, described holding member and described operation information keep power allocation information relatively, relation between the power that described power allocation information indication supply power amount and each driver part use, described definite parts obtain power allocation information corresponding to described operation information from described holding member, and determine the power that will distribute based on the amount of power allocation information that is obtained and described supply power.This will produce following effect: based on the power of determining corresponding to the power distribution information of the amount of operation information and supply power to be assigned with.
Among the embodiment that mentions in the above, described optical component comprises condenser lens and is used for the correcting lens of correcting camera shake; And described driver part comprises first driver part that drives described condenser lens, and second driver part that drives described correcting lens.This will produce following effect: each the power of determining to be assigned to first driver part that drives condenser lens and second driver part that drives the correcting lens that is used for correcting camera shake.In addition, in this case, when by the described imaging device of the operation information appointment of being obtained be operating as policer operation the time, described definite parts give described first driver part aspect power division right of priority is higher than the right of priority that gives described second driver part.This will produce following effect: when the operation of imaging device was policer operation, the right of priority that gives first driver part aspect power division was higher than the right of priority that gives second driver part.In addition, in this case, described optical component also comprises aperture; Described driver part also comprises the 3rd driver part that drives described aperture; And the operation of working as the described imaging device of the operation information appointment of being obtained is when being policer operation, and described definite parts give described the 3rd driver part aspect power division right of priority is lower than the right of priority that gives described second driver part.This will produce following effect: when the operation of imaging device was policer operation, the right of priority that gives the 3rd driver part aspect power division was lower than the right of priority that gives second driver part.In addition, in this case, when the operation of the described imaging device of the operation information appointment of being obtained when pressing shutter release button during the operation during to when the exposure beginning time, described definite parts give described second driver part aspect power division right of priority is lower than the right of priority that gives described first driver part.This will produce following effect: when the operation by the imaging device of the operation information appointment of being obtained is from when pressing shutter release button to when the operation the exposure elementary period time, the right of priority that gives second driver part aspect power division is lower than the right of priority that gives first driver part.In addition, in this case, when the operation of the described imaging device of the operation information appointment of being obtained was exposing operation when taking rest image, described definite parts were higher than the right of priority that gives described first driver part in the right of priority that gives described second driver part aspect the described power division.This will produce following effect: when the operation by the imaging device of the operation information appointment of being obtained was exposing operation when taking rest image, the right of priority that gives second driver part aspect power division was higher than the right of priority that gives first driver part.In addition, in this case, when described supply power during less than the predetermined electric power amount, described definite parts are higher than the right of priority that gives described first driver part in the right of priority that gives described second driver part aspect the described power division.This can produce following effect: when supply power during less than the predetermined electric power amount, the right of priority that gives second driver part aspect power division can be higher than the right of priority that gives first driver part.
According to embodiments of the invention, a kind of interchangeable lens, its control method are provided and have been used to cause computing machine to carry out the program of the method.Interchangeable lens comprises: obtain parts, describedly obtain parts obtain supply power from the imaging device that is attached with described interchangeable lens amount; And definite parts, described definite parts are based on the amount of the described supply power that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.This will produce following effect: based on the amount of supply power, in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
According to embodiments of the invention, a kind of interchangeable lens, its control method are provided and have caused computing machine to carry out the program of described method.Interchangeable lens comprises: obtain parts, the described parts that obtain obtain the operation information relevant with the operation of described imaging device during providing supply power from the imaging device that is attached with described interchangeable lens; And definite parts, described definite parts are based on the operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.This will produce following effect: based on described operation information, in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
According to embodiments of the invention, a kind of imaging system, its control method are provided and have caused computing machine to carry out the program of described method.Described imaging system comprises imaging device and interchangeable lens.Described imaging device comprises: the operation information transmit block, described operation information transmit block to attached described interchangeable lens send the operation information relevant with the operation of described imaging device; And supply power determines parts, and described supply power determines that the power consumption of power that parts provide according to power supply and described imaging device determines to be provided to the amount of the supply power of described interchangeable lens.Described interchangeable lens comprises: obtain parts, described amount that the supply power that is provided is provided parts and the operation information that is sent of obtaining; And definite parts, described definite parts are based on the amount of the described supply power that is obtained and the described operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.This can produce following effect: according to the amount and the operation information of the supply power that provides to interchangeable lens from imaging device, determine to be assigned to the power that drives a plurality of driver parts of a plurality of optical components in the interchangeable lens in interchangeable lens.
According to embodiments of the invention, a kind of imaging device, its control method are provided and have been used to cause computing machine to carry out the program of described method.Described imaging device comprises: the operation information transmit block, described operation information transmit block to attached interchangeable lens send the operation information relevant with the operation of described imaging device; And supply power determines parts, and described supply power determines that the power consumption of power that parts provide according to power supply and described imaging device determines to be provided to the amount of the supply power of described interchangeable lens.This will produce following effect: provide the operation information relevant with the operation of imaging device, and the power consumption of power that provides according to power supply and described imaging device is determined the amount of supply power.
Description of drawings
Fig. 1 is the block diagram that illustrates according to the functional configuration example of the imaging system of the embodiment of the invention;
Fig. 2 A and Fig. 2 B all are the synoptic diagram that the example of the variable power of controlling the example of example regularly, operation under the situation of rest image and moving image and being provided to interchangeable lens is taken by the imaging system of working as that illustrate according to the embodiment of the invention;
Fig. 3 is the curve map by the example of allocation table holding member power division table that keep, that use during policer operation that illustrates according to the embodiment of the invention;
Fig. 4 illustrates according to the curve map of the embodiment of the invention by allocation table holding member power division table example that keep, that use during charging operations;
Fig. 5 is the curve map by allocation table holding member power division table example that keep, that use during the rest image exposing operation that illustrates according to the embodiment of the invention;
Fig. 6 is the curve map by allocation table holding member power division table example that keep, that use between the moving image exposure period that illustrates according to the embodiment of the invention;
Fig. 7 illustrates when when taking rest image according to the imaging device of the embodiment of the invention process flow diagram of supply power hand-off process example; And
Fig. 8 is the process flow diagram that power division is handled example when illustrating according to the passing through interchangeable lens and take rest image of the embodiment of the invention.
Embodiment
Below, the mode of the present invention (hereinafter being called " embodiment ") of implementing will be described.
[example of the functional configuration of imaging system]
Fig. 1 is the block diagram that illustrates according to the functional configuration example of the imaging system 10 of the embodiment of the invention.Imaging system 10 comprises imaging device 100 and interchangeable lens 200.
It should be noted that this embodiment of the present invention supposes that camera lens (interchangeable lens 200) is that tradable single lens reflex camera is as imaging system 10.Suppose that imaging device 100 closes Jiao by the judgement of contrast method.Equally also hypothesis uses image device to carry out photometry at exposure control.
Interchangeable lens 200 comprises lens barrel 210, camera shake correction lens 220, aperture 230, condenser lens 240, camera shake correction actuator 221, aperture driving actuator 231 and focus control actuator 241.Interchangeable lens 200 also comprises camera shake drive amount calculating unit 222, aperture drive amount calculating unit 232, focusing drive amount calculating unit 242, camera shake detection part 223, allocation table holding member 250, distributes power to determine parts 260 and power division parts 270.
Lens barrel 210 is to be equipped with the part that incides the lens combination, aperture etc. of the light on the image-forming block 181 with optical mode control.For convenience of description, in lens barrel 210 parts camera shake correction lens 220, aperture 230 and condenser lens 240 are shown.
Camera shake correction lens 220 are driven lens when correcting camera shake.
Camera shake correction actuator 221 is the actuators that are used for drives camera jitter correction lens 220.Camera shake correction actuator 221 is by the electric power drives camera jitter correction lens 220 that provide from camera shake drive amount calculating unit 222 are provided.It should be noted, in an embodiment of the present invention, suppose when not providing power (0mW) that camera shake correction actuator 221 can not keep the center (on this position, the center and the optical axis of camera shake correction lens 220 are aligned with each other) of camera shake correction lens 220.That is to say, suppose when power (0mW) is not provided that interchangeable lens 200 falls under gravity into the minimum point in its mobile range.
The shake of camera shake detection part 223 detection camera.Camera shake detection part 223 is to realize by the gyrosensor of (for example) detection angular velocity of generation when object rotates.Camera shake detection part 223 will be relevant with detected camera shake information (for example, angular velocity) be provided to camera shake drive amount calculating unit 222 as camera shake information.
Camera shake drive amount calculating unit 222 is controlled the driving force that is produced by camera shake correction actuator 221 based on the power that distributes from power division parts 270 with from the camera shake information that camera shake detection part 223 provides.Camera shake drive amount calculating unit 222 comes the moving direction and the amount of movement of computing camera jitter correction lens 220 based on the current location of camera shake information and camera shake correction lens 220.Then, the power that distributes with power division parts 270 is as maximal value (upper limit), and camera shake drive amount calculating unit 222 provides power to camera shake correction actuator 221, so that produce driving force according to the amount of movement that calculates.
For example, suppose following situation:, also can not have camera shake (for example, owing to be fixed to tripod) even power division parts 270 provide the quantity of power identical with the maximum consumption of power of camera shake correction actuator 221.In this case, in the power that is assigned with, camera shake drive amount calculating unit 222 only provides the quantity of power of the center that can keep camera shake correction lens 222 to camera shake correction actuator 221.
In addition, suppose following situation: power division parts 270 provide the quantity of power identical with the maximum consumption of power of camera shake correction actuator 221, low-frequency less camera shake (for example, can use 10% the power that equals maximum consumption of power to come correcting camera shake) takes place.In this case, camera shake drive amount calculating unit 222 only provides the quantity of power that allows correcting camera shake (equaling 10% power of maximum consumption of power) to camera shake correction actuator 221.
Aperture 230 be used to regulate from subject enter imaging device 100 incident light amount cover object.
Aperture driving actuator 231 is the actuators that are used to drive aperture 230.Aperture driving actuator 231 is controlled the opening of aperture 230 by the power that is provided by aperture drive amount calculating unit 232 is provided.It should be noted, in an embodiment of the present invention, suppose when power (0mW) is not provided that aperture driving actuator 231 can not keep the current opening of aperture 230.That is to say, suppose when applying when vibration to interchangeable lens 200 under the state that power (0mW) is not provided that the opening of aperture 230 can be owing to vibrate and change.
Aperture drive amount calculating unit 232 is controlled the driving force that is produced by aperture driving actuator 231 based on the power that distributes from power division parts 270 with from the aperture activation bit that imaging device 100 provides.Here, described aperture activation bit is meant the information relevant with the amount of regulating incident light (for example, F value).Aperture drive amount calculating unit 232 calculates the drive amount of aperture 230 based on aperture activation bit and aperture 230 current openings.Then, the power that distributes with power division parts 270 is as maximal value (upper limit), and aperture drive amount calculating unit 232 provides power to aperture driving actuator 231, so that produce driving force according to the drive amount that calculates.
For example, suppose following situation: provide the quantity of power identical from power division parts 270, and the aperture activation bit of the amount of the current incident light of indication maintenance is provided with the maximum consumption of power of aperture driving actuator 231.In this case, aperture drive amount calculating unit 232 provides to aperture driving actuator 231 and can keep the quantity of power (position maintenance power) of aperture 230 when open front.
In addition, suppose following situation: provide the quantity of power identical with the maximum consumption of power of aperture driving actuator 231 from power division parts 270, and the aperture activation bit that the amount that indication increases incident light is provided (for example, with current F value is 5.0 to compare, and provides F 3.0 as the F value that will be provided with).In this case, aperture drive amount calculating unit 232 drives aperture by using maximum consumption of power with maximal rate, thereby promptly causes aperture to be converted to the target opening.
Condenser lens 240 is regulated focusing by moving in lens barrel 210 inside along optical axis direction.
Focus control actuator 241 is the actuators that are used to drive condenser lens 240.Focus control actuator 241 drives condenser lens 240 by the power that provides from focusing drive amount calculating unit 242 is provided.It should be noted, in an embodiment of the present invention, suppose when power (0mW) is not provided, assemble control actuator 241 and can not keep the current position of condenser lens 240.That is to say, suppose when applying when vibration to interchangeable lens 200 under the state that power (0mW) is not provided that the position of condenser lens 240 is owing to vibrate and change (focal position is shifted).
Focus on drive amount calculating unit 242 and control the driving force that produces by focus control actuator 241 according to the power that distributes from power division parts 270 with from the focusing activation bit that imaging device 100 provides.Here, the focusing activation bit is meant with condenser lens 240 and moves relevant information (for example, focusing on the amount that moves).Focus on drive amount calculating unit 242 and calculate the amount of movement of condenser lens 240 based on focusing on activation bit and condenser lens 240 current positions.Then,, focus on drive amount calculating unit 242 and provide power, as maximal value (upper limit) with the power that distributes from power division parts 270 so that produce driving force according to the amount of movement that calculates to focus control actuator 241.
Allocation table holding member 250 is kept for determining to be assigned to the information (power division table) of the power of each actuator (driver part) in the interchangeable lens 200.Allocation table holding member 250 is to distributing power to determine that parts 260 provide the power division that is kept table.It should be noted that the power division table that is kept by allocation table holding member 250 is described in the back with reference to Fig. 3 to Fig. 6.It should be noted that allocation table holding member 250 is examples of holding member.In addition, the power division table is the example of power allocation information.
Distribute power to determine that parts 260 determine to be assigned to the power of each actuator in the interchangeable lens 200.Based on the information (operation mode information) of the indication imaging device that provides from imaging device 100 100 operation itself, distribute power to determine that parts 260 obtain power division table corresponding to this operation from allocation table holding member 250.Then, based on power division table and the information (interchangeable lens supply power information) of indicating the quantity of power that is provided to interchangeable lens 200, distribute power to determine parts 260 definite quantity of power that will be assigned to each actuator.That is to say, based on the operation of imaging device in the given period 100 itself be provided to the quantity of power of interchangeable lens 200 at this moment during the section, distribute power to determine to be assigned to during parts 260 are determined at this moment section the quantity of power of each actuator.Then, distribute power to determine that parts 260 provide the information (distribution power information) of the determined quantity of power of indication to power division parts 270.It should be noted, distribute power to determine that parts 260 are the examples that obtain in parts and the definite parts each.
Power division parts 270 distribute power.Power division parts 270 are based on from distributing power to determine the distribution power information that parts 260 provide, will be by the power division that provides of imaging device 100 to each actuator.
It should be noted, with based on the driving force of the power that distributes from power division parts 270 as maximum driving force, each actuator drives corresponding lens and aperture.For example, 3000mW is being assigned under the situation of focus control actuator 241, when will condenser lens 240 move long apart from the time, drive condenser lens rapidly by producing the maximum driving force that uses this 3000mW to produce.Will only moving very little distance to condenser lens and needing under the situation of high precision driving, use the part of 3000mW power very accurately slowly to drive condenser lens 240.
Imaging device 100 comprises that operation acceptance parts 110, control assembly 120, main body operation information provide parts 130, interchangeable lens supply power to determine parts 140 and interchangeable lens power supply parts 150.Imaging device 100 also comprises power supply unit 160, focuses on activation bit production part 171, aperture activation bit production part 172, image-forming block 181, picture signal processing element 182, recording-member 183 and display unit 184.
The operation that operation acceptance parts 110 are accepted from the user.When (for example) when pressing shutter release button, operation acceptance parts 110 provide the signal relevant with described push as operation signal to control assembly 120.
The operation of each parts in the control assembly 120 control imaging devices 100.For example, based on the signal relevant with pressing shutter release button, control assembly 120 each in image-forming block 181 and picture signal processing element 182 provides the signal of beginning image taking.In addition, control assembly 120 is analyzed the mode of operation of each assembly in the imaging devices 100, and calculates the required power of operation that is used for imaging device 100 itself based on analysis result.Then, control assembly 120 determines that to the interchangeable lens supply power parts 140 provide the information (necessary power information) of the power that index gauge calculates.In addition, control assembly 120 provides parts 130 that the information (analysis result information) of the analysis result of the mode of operation of each assembly in the indication imaging device 100 is provided to the main body operation information.
The main body operation information provides parts 130 that the information (operation mode information) of the mode of operation of indication imaging device 100 is provided.At first, the main body operation information provides parts 130 to produce operation mode information based on the analysis result information that provides from control assembly 120.Then, the main body operation information provides parts 130 to distributing power to determine that parts 260 provide the operation mode information that is produced.It should be noted that it is examples of operation information transmit block that the main body operation information provides parts 130.
The interchangeable lens supply power determines that the power that will provide to interchangeable lens 200 from imaging device 100 is provided parts 140.The interchangeable lens supply power determines that parts 140 can the power (power supply supply power) that can be provided by power supply unit 160 be provided and be determined to be provided to the power of interchangeable lens 200 by the difference of the power of necessary power information indication by (for example).The interchangeable lens supply power determines that parts 140 are to interchangeable lens power supply parts 150 with distribute power to determine that in the parts 260 each provides the information (interchangeable lens supply power information) of the determined power of indication.It should be noted, in an embodiment of the present invention, suppose the main body operation information provide parts 130 and interchangeable lens supply power determine parts 140 with 1/60 second be interval (was the cycle with 1/60 second) respectively implement either operational mode information and interchangeable lens supply power information generation and provide.That is to say that the interchangeable lens supply power determines that parts 140 by determining can be provided in implement either operational mode information indicated operating period the power of interchangeable lens 200, produce interchangeable lens supply power information.It should be noted that the interchangeable lens supply power determines that parts 140 are examples that supply power is determined parts.
Interchangeable lens power supply parts 150 provide power to interchangeable lens 200.Interchangeable lens power supply parts 150 obtain by the quantity of power of determining the interchangeable lens supply power information indication that parts 140 provide from the interchangeable lens supply power from power supply unit 160, and the power that is obtained is provided to power division parts 270.
Power supply unit 160 is provided for the power that imaging device 100 is operated.By forming power supply unit 160 such as secondary cell (for example rechargeable Ni-H 2 battery).
Focus on activation bit production part 171 and produce the focusing activation bit, so that focus on the object of taking is consistent.For example, focus under the consistent situation making, focus on activation bit production part 171 and produce the focusing activation bit that indication is used to carry out the drive amount of contrast method by the contrast method.Focus on activation bit production part 171 and provide the focusing that is produced activation bit to focusing on drive amount calculating unit 242.
Aperture activation bit production part 172 produces the aperture activation bit of the amount that is used to regulate incident light.For example, aperture activation bit production part 172 calculates the best light quantity (for example, F value) that is used for image taking based on the amount of the incident light that was detected by image-forming block 181 and the shutter speed of having set before pressing shutter release button.Then, 172 information relevant with the light quantity that calculates of aperture activation bit production part offer aperture drive amount calculating unit 232 as the aperture activation bit.
Image-forming block 181 will be by becoming electric signal to produce picture signal from the incident light opto-electronic conversion of subject.Realize image-forming block 181 by comprising (for example) complementary metal oxide semiconductor (CMOS) (CMOS) sensor or charge-coupled device (CCD) sensor as imageing sensor (image device).Image-forming block 181 begins to take the operation of subject and generation photographic images based on the image taking commencing signal that provides from control assembly 120.Image-forming block 181 is that unit provides the image that is produced (photographic images) to picture signal processing element 182 with every width of cloth image (frame).
The picture signal of the frame form that 182 pairs of picture signal processing element provide from image-forming block is used prearranged signal and is handled, and will be recorded the view data that parts 183 keep and will be presented at view data on the display unit 184 thereby produce.Picture signal processing element 182 provides and will be recorded the view data that parts 183 keep among the treated picture signal.In addition, picture signal processing element 182 will be presented at view data on the display unit 184 among display unit 184 provides treated picture signal.
The view data that recording-member 183 records provide from picture signal processing element 182.For example, realize recording-member 183 by storage card.
Display unit 184 display images.For example, realize display unit 184 by color liquid crystal panel.Except the image that provides from picture signal processing element 182, the image, the pattern that are recorded before display unit 184 also shows are provided with screen etc.
[example of the operator scheme of imaging system]
Fig. 2 A and Fig. 2 B illustrate taking the example of regularly example of control under the situation of rest images and moving image, operation and being provided to the synoptic diagram of example of the variable power of interchangeable lens in imaging system 10 according to the embodiment of the invention.
It should be noted, in Fig. 2 A and 2B, suppose that the maximal value that can be provided to the power of interchangeable lens 200 by imaging device 100 is 6000mW.In addition, suppose that imaging device 100 can provide the power of 6000mW to be used for photographic images when showing live view (preview image of the subject image that is received by image device) and carrying out automatic focus and automatic exposure in the standby stage (policer operation).
In Fig. 2 A, on time shaft, show and taking the timing (B1 regularly) of pressing shutter release button under the situation of rest image and along with the preceding curtain of focal plane shutter moves and the timing (regularly S1) that begins to expose.In addition, at one time on the axle, show that back curtain along with focal plane shutter moves and the timing (regularly S2) that finishes to expose.
It should be noted that in Fig. 2 A, policer operation pattern 411, charging operations pattern 412, exposing operation pattern 413 and policer operation pattern 414 are illustrated as corresponding to the operator scheme regularly of the control shown in Fig. 2 A.In addition, in Fig. 2 A, show the performance number that in each operator scheme, is provided to interchangeable lens 200 with performance number 421 to 424.
Policer operation pattern 411 is patterns of the holding state that be used for image taking (policer operation) of indication till the timing of pressing shutter release button.When being in this pattern, imaging device 100 is waited for the sign on that is used for image taking (pressing shutter release button) from the user when showing live view.Under this state, in image-forming block 181, produce continuously the rough image that is used for live view, and therefore imaging device 100 only needs seldom power consumption.In performance number 421, the 600mW that illustrates is the power that imaging device 100 is provided to interchangeable lens 200 when being in this pattern.
Charging operations pattern 412 is meant and is shown as device 100 from pressing the pattern of shutter release button to the operation of the timing that begins to expose.When being in this pattern, imaging device 100 is to the actuator charging (charging operations) that drives focal plane shutter.When being in this pattern, imaging device 100 charges to the actuator of mobile focal plane shutter at short notice, and therefore can significantly reduce to the quantity of power that interchangeable lens 200 provides.In performance number 422, the 3000mW that illustrates is the power that imaging device 100 is provided to interchangeable lens 200 when being in this pattern.
Exposing operation 413 is meant the pattern that is shown as the operation when beginning to end exposure as device 100 from exposure.When being in this pattern, imaging device 100 receives incident light from subject expose (exposing operation) by the whole surface by the image device in the image-forming block 181.When being in this state, imaging device 100 produces the high-definition image that is used for image taking, so imaging device 100 required power own become greater than power required when being in monitoring mode.In performance number 423, as the power that imaging device 100 when being in this pattern provides to interchangeable lens 200, the power of shown 4500mW is less than the power when being in monitoring mode but greater than the power when being in charge mode.
Policer operation pattern 414 is patterns of indication end exposure main body operation afterwards.Policer operation pattern 414 is patterns of indication operation of imaging device 100 when next width of cloth image taking is prepared against in standby.Because policer operation pattern 414 is identical with policer operation pattern 411, so the descriptions thereof are omitted at this.
In Fig. 2 B, on time shaft, show and under the situation of taking moving image, press the timing (regularly B11) that shutter release button begins the taking moving image.In addition, in Fig. 2 B, show corresponding to the operator scheme 431 and 432 and regularly of the control shown in Fig. 2 B corresponding to the performance number 441 and 442 of these operator schemes.Here illustrate equally under the situation of taking moving image, the performance number that provides to interchangeable lens 200 changes along with the operation of imaging device 100.
Under this mode, in imaging system 10, the power that is provided to interchangeable lens 200 changes along with the operation of imaging device 100.In addition, because the information that Fig. 2 A is relevant with the operation with imaging device 100 shown in the 2B provides parts 130 to be provided to interchangeable lens 200 from the main body operation information, so interchangeable lens 200 can detect the operator scheme of imaging device 100.
It should be noted, be single value though Fig. 2 A and Fig. 2 B have described to be provided to the value of the supply power of interchangeable lens 200 under each operator scheme, and this property of should in no way limit ground is understood.Under every kind of operator scheme, power that can be by making supply is along with the power that is provided by power supply unit 160 is provided the mode that the operation of imaging device 100 changes effectively.
[example of the power division table that during policer operation, uses]
Fig. 3 is the curve map by the example of allocation table holding member 250 power division tables that keep, that use during policer operation that illustrates according to the embodiment of the invention.
Fig. 3 illustrates the power characteristic that indication monitoring period (referring to Fig. 2 A and 2B) is assigned to the power of each actuator, wherein transverse axis is provided to the axle of the power (interchangeable lens supply power) of interchangeable lens 200 as indication, and Z-axis is assigned to the axle of the power of each actuator as indication.Fig. 3 shows and focuses on driving power characteristic 331, camera shake correction driving power characteristic 332 and aperture driving power characteristic 333 are assigned to the power of each actuator as indication power characteristic.It should be noted that in Fig. 3, the unit of Z-axis represents with the ratio (%) that accounts for the maximum consumption of power that is assigned to each actuator.
Focus on driving power characteristic 331 and be the characteristic that is assigned to the power of focus control actuator 241 during the indication policer operation.According to focusing on driving power characteristic 331,, there is not power division to focus control actuator 241 (owing to vibrating the displacement that causes condenser lens 240) when interchangeable lens supply power during less than about 1300mW.When the interchangeable lens supply power is about 1300mW extremely during about 2000mW, the quantity of power of the current location that can keep condenser lens 240 (position maintenance power) is assigned to focus control actuator 241.When the interchangeable lens supply power from about 2000mW when about 4000mW, the power that increases along with the increase of interchangeable lens supply power (increasing to maximum consumption of power from position maintenance power) is assigned to focus control actuator 241.It should be noted that when the power that is assigned to focus control actuator 241 became greater than position maintenance power, focus control actuator 241 becomes can mobile focusing lens 240.
When interchangeable lens supply power during greater than about 4000mW, the power that is assigned to focus control actuator 241 becomes maximum consumption of power (100%).It should be noted, when the interchangeable lens supply power for about 2000mW when about 4000mW, the driving force that focus control causes device 241 generations is along with the power increase that is distributed and become bigger.
Camera shake correction driving power characteristic 332 is meant and is shown in the characteristic that is assigned to the power of camera shake correction actuator 221 during the policer operation.According to camera shake correction driving power characteristic 332,, there is not power division to camera shake correction actuator 221 (because vibration causes the displacement of camera shake correction lens 220) when interchangeable lens supply power during less than about 1000mW.When the interchangeable lens supply power is about 1000mW extremely during about 2400mW, can keep the quantity of power (position maintenance power) of the current location of camera shake correction lens 220 to be assigned to camera shake correction actuator 221.When the interchangeable lens supply power for about 2400mW when about 4400mW, the power that increases along with the increase of interchangeable lens supply power (increasing to maximum consumption of power from position maintenance power) is assigned to camera shake correction actuator 221.When interchangeable lens supply power during greater than about 4400mW, the power that is assigned to camera shake correction actuator 221 becomes maximum consumption of power (100%).
Aperture driving power characteristic 333 is meant and is shown in the characteristic that is assigned to the power of aperture driving actuator 231 during the policer operation.According to aperture driving power characteristic 333,, there is not power division to aperture driving actuator 231 (because vibration causes the displacement of aperture 230) when interchangeable lens supply power during less than about 1750mW.When the interchangeable lens supply power is about 1750mW extremely during about 2750mW, can keep the quantity of power (position maintenance power) of the current location of aperture 230 to be assigned to aperture driving actuator 231.When the interchangeable lens supply power for about 2750mW when about 4500mW, the power that increases along with the increase of interchangeable lens supply power (described increase refers to increase to maximum consumption of power from position maintenance power) is assigned to aperture driving actuator 231.When interchangeable lens supply power during greater than about 4500mW, the power that is assigned to aperture driving actuator 231 becomes maximum consumption of power (100%).
Now, with the description that provides the power division table that uses during the policer operation, pay close attention to two zones (distribute preferential district A1 and distribute preferential district A2) in this power division table simultaneously.
Distribute preferential district A1 to be meant to be shown in quantity of power (interchangeable lens supply power) that interchangeable lens 200 receives from imaging device 100 that the zone of the power division under the situation that the position keeps power (about 2000mW) is not provided even as big as all actuators to interchangeable lens 200.During policer operation, determine the composition of photographic images by the user.In this operating period, when optical axis is not aimed in the center of camera shake correction lens 220, because the visual field displacement causes the impossible composition of determining photographic images.Therefore, in distributing priority area A1, to camera shake correction actuator 221, making provides the position to keep power to camera shake correction actuator 221, with center and the optical axis alignment with camera shake correction lens 220 with power division on override ground.That is to say,, be higher than right of priority for the power division of focus control actuator 241 for the right of priority of the power division of camera shake correction actuator 221 when interchangeable lens supply power during less than predetermined electric power amount (for example, about 2000mW).
Even when when camera shake correction actuator 221 provides the position to keep power, if, also can't easily determine the composition of photographic images because vibration causes focusing on frequent displacement.Therefore, when the quantity of power that provides to interchangeable lens 200 surpasses the position maintenance power that is assigned to camera shake correction actuator 221, distribute power with this optimal way that the position is kept power division arrive focus control actuator 241.It should be noted, when the quantity of power that provides to interchangeable lens 200 surpasses each distribution locations maintenance power that is enough in camera shake correction actuator 221 and focus control actuator 241, distribute power with this optimal way that the position is kept power be provided to aperture driving actuator 231.That is to say,, be higher than right of priority for the power division of camera shake correction actuator 221 and focus control actuator 241 for the right of priority of the power division of aperture driving actuator 231 when interchangeable lens supply power during greater than the predetermined electric power amount.
Under this mode, in distributing priority area A1,, give camera shake correction actuator 221 the highest right of priority as the priority (priority) of distributing power, give the focus control actuator 241 high priorities, and give aperture driving actuator 231 minimum right of priority.Therefore, when supply power during the policer operation hour (when producing the live view image), will remain in position by the object that each actuator drives according to the order that at utmost influences policer operation.
The quantity of power of distributing priority area A2 to be meant to be shown in interchangeable lens 200 to receive surpasses the zone that is enough to provide to all actuators the priority under the situation of the quantity of power (about 2000mW) that the position keeps power.When distribution kept the quantity of power of power greater than the position, each actuator became and can move corresponding lens or aperture.When user during the policer operation will determine the composition of photographic images, if focusing is consistent with the object that will be taken rapidly, then the user can determine composition at an easy rate.In addition, in this case, even the live view image is owing to camera shake thickens, the user also can according to the camera situation of no camera shake correction under identical mode determine the composition of captured image.That is to say, when the user will determine the composition of photographic images during policer operation, compare with show unambiguous live view by correcting camera shake, the more important thing is make rapidly focus on consistent with the object that will take.
In addition, even when taking the live view image, aperture 230 is not arranged to allow the opening that exposes, by for example regulating the time shutter in the image device, imaging device 100 also can produce the live view image that picture quality is enough to the composition of definite photographic images.That is to say, in distributing priority area A2, preferentially power division is arrived focus control actuator 241, make focusing consistent rapidly.Be provided under the situation of interchangeable lens 200 in the big quantity of power that enough focuses on suitable high speed adjusting that gets, the user becomes and can more easily determine composition, so power also is assigned to camera shake correction actuator 221.Big enough with suitable high speed regulate focus on and in a satisfactory manner the quantity of power of correcting camera shake be provided under the situation of interchangeable lens 200, in order to make composition more near the composition of photographic images, power is assigned to aperture driving actuator 231, makes to drive aperture 230.
Under this mode, in distributing priority area A2,, give focus control actuator 241 the highest right of priority as the order (priority) of the right of priority of distributing power, give the camera shake correction actuator 221 high priorities, and give aperture driving actuator 231 minimum right of priority.Therefore, even be provided to the quantity of power of interchangeable lens 200 do not have big must be enough to drive all actuators the time by satisfied mode (, cause rotating slower), can be according to making the user determine that easily the mode of the composition of photographic images arrives each actuator with power division.
[example of the power division table that uses during the charging operations]
Fig. 4 is the curve map of the example of the power division table that uses between the charge period that is kept by allocation table holding member 250 that illustrates according to the embodiment of the invention.
Fig. 4 illustrates the power characteristic of distribution that (referring to Fig. 2 A and 2B) during the indication charging operations is provided to the power of each actuator, wherein with the axle of transverse axis, and Z-axis is provided to the axle of the power of each actuator in the interchangeable lens 200 as indication as indication interchangeable lens supply power.Fig. 4 shows and focuses on driving power characteristic 341, camera shake correction driving power characteristic 342 and aperture driving power characteristic 343, is provided to the power characteristic of distribution of the power of each actuator as indication.
It should be noted, for each characteristic shown in Fig. 4, the characteristic till supply power surpasses about 2000mW basically with the policer operation shown in Fig. 3 during characteristic identical, and so here the descriptions thereof are omitted.
Focus on driving power characteristic 341 and be the characteristic that is assigned to the power of focus control actuator 241 during the indication charging operations.According to focusing on driving power characteristic 341, when the interchangeable lens supply power for about 2400mW when about 3800mW, the power that increases along with the increase of interchangeable lens supply power (described increase is meant from position maintenance power to maximum consumption of power) is assigned to focus control actuator 241.When interchangeable lens supply power during greater than about 3800mW, the power that is assigned to focus control actuator 241 becomes maximum consumption of power (100%).
Camera shake correction driving power characteristic 342 is characteristics that indication is assigned to the power of camera shake correction actuator 221 during the charging operations.According to camera shake correction driving power characteristic 342, when the interchangeable lens supply power for about 2800mW when about 3800mW, the power that increases along with the increase of interchangeable lens supply power (described increase is to maximum consumption of power from position maintenance power) is assigned to camera shake correction actuator 221.When interchangeable lens supply power during greater than about 3800mW, the power that is assigned to camera shake correction actuator 221 becomes maximum consumption of power (100%).
Aperture driving power characteristic 343 is characteristics that indication is assigned to the power of aperture driving actuator 231 during the charging operations.According to aperture driving power characteristic 343, when the interchangeable lens supply power for about 2000mw when about 3800mW, the power that increases along with the increase of interchangeable lens supply power (described increase refers to from position maintenance power to maximum consumption of power) is assigned to aperture driving actuator 231.When interchangeable lens supply power during greater than about 3800mW, the power that is assigned to aperture driving actuator 231 becomes maximum consumption of power (100%).
Now, with the description that provides the power division table that uses during the charging operations, pay close attention to zone (distributing priority area A12) simultaneously corresponding to the distribution priority area A2 shown in Fig. 3.
Charging operations is represented the preparation period till the beginning that exposes, and therefore must finish the adjusting of focusing and aperture before the exposure beginning.In addition, because charging operations is corresponding to determining the composition of photographic images from the user and pressing the timing of shutter release button and then to begin after exposing, so needn't produce live view clearly.That is to say, in distributing priority area A12, preferentially power division is arrived focus control actuator 241 and aperture driving actuator 231, the feasible adjusting of finishing rapidly focusing and aperture.When being provided under the situation of interchangeable lens 200, also power division is arrived camera shake correction actuator 221 above being enough to the abundant quantity of power that promptly drives focus control actuator 241 and aperture driving actuator 231.
Under this mode, in distributing priority area A12, during charging operations, as the order (priority) of the right of priority of distributing power, give focus control actuator 241 and aperture driving actuator 231 higher right of priority, and give camera shake correction actuator 221 minimum right of priority.Therefore, even when not being provided to interchangeable lens 200, also can effectively distribute power, make that rapid execution is to the adjusting of focusing and aperture during charging operations to each actuator even as big as the power that drives all actuators by satisfied mode.
[example of the power division table that uses during the rest image exposing operation]
Fig. 5 is the curve map of the power division table that uses during the rest image exposing operation that is kept by allocation table holding member 250 that illustrates according to the embodiment of the invention.
Fig. 5 shows the power characteristic of distribution that (referring to Fig. 2 A and 2B) during the exposing operation of indication rest image is provided to the power of each actuator, wherein with the axle of transverse axis, and Z-axis is provided to the axle of the power of each actuator in the interchangeable lens 200 as indication as indication interchangeable lens supply power.Fig. 5 shows and focuses on driving power characteristic 351, camera shake correction driving power characteristic 352 and aperture driving power characteristic 353, is provided to the power characteristic of distribution of the power of each actuator as indication.
Focus on driving power characteristic 351 and be the characteristic that is assigned to the power of focus control actuator 241 during the indication rest image exposing operation.According to focusing on driving power characteristic 351,, there is not power to be assigned to focus control actuator 241 when interchangeable lens supply power during less than about 1500mW.When the interchangeable lens supply power for about 1500mW when about 2500mW, the quantity of power that equals position maintenance power is assigned to focus control actuator 241.When the interchangeable lens supply power for about 2500mW when about 3800mW, the power that increases along with the increase of interchangeable lens supply power (described increase is meant from position maintenance power to maximum consumption of power) is assigned to focus control actuator 241.
Camera shake correction driving power characteristic 352 is the characteristics that are assigned to the power of camera shake correction actuator 221 during the indication rest image exposing operation.According to camera shake correction driving power characteristic 352, when the interchangeable lens supply power less than about 1000mW, do not have power to be assigned to camera shake correction actuator 221.When the interchangeable lens supply power for about 1000mW when about 3800mW, the power that increases along with the increase of interchangeable lens supply power (described increase refers to from position maintenance power to maximum consumption of power) is assigned to camera shake correction actuator 221.
Aperture driving power characteristic 353 is meant and is shown in the characteristic that is assigned to the power of aperture driving actuator 231 during the rest image exposing operation.Because aperture driving power characteristic 353 is substantially the same with focusing driving power characteristic 351, so omitted its description here.
Now, with the description that provides the power division table that uses during the rest image exposing operation, pay close attention to two zones (distribute priority area A21 and distribute priority area A22) in this power division table simultaneously.
Distributing priority area A21 is corresponding to the zone of each in distribution priority area A1 shown in Fig. 3 and Fig. 4 and A11 respectively.In addition, distributing priority area A22 is corresponding to the zone of each in distribution priority area A2 shown in Fig. 3 and Fig. 4 and A12 respectively.During the rest image exposing operation, the image device in the image-forming block 181 is exposed to the incident light from subject, to produce photographic images.If under this state, camera shake occurred, then can occur bluring.In addition, unless carry out certain particular image shooting, otherwise the driving of any focusing and aperture can appear hardly.In addition, there be not power to be assigned under the situation of corresponding actuator, unless apply vibration to interchangeable lens 200, focusing and aperture can not move.Therefore, distributing priority area A21 and distributing among the priority area A22, override arrives camera shake correction actuator 221 with power division.
In distributing priority area A21, keep power to compare with each distribution locations in focus control actuator 241 and aperture driving actuator 231, give to distribute the higher right of priority of quantity of power that keeps power greater than the position to camera shake correction actuator 221.Under the situation of priority allocation big camera shake that must be enough to proofread and correct certain amplitude (predetermined amplitude), become with the power that is assigned to each other actuator and to equal the position and keep the mode of power to distribute power to the quantity of power of camera shake correction actuator 221.
In distributing priority area A22, be enough to when camera shake correction actuator 221 distributes enough power when the interchangeable lens supply power surpasses, keep the quantity of power of power to be assigned in focus control actuator 241 and the aperture driving actuator 231 each greater than the position.
Under this mode, during the rest image exposing operation,, give camera shake correction actuator 221 the highest right of priority as the priority of distributing power.Therefore, even when not being provided to interchangeable lens 200 even as big as the quantity of power that drives all actuators by satisfied mode, also can effectively power division be arrived each actuator, make during the rest image exposing operation, can not occur in the photographic images bluring.
[example of the power division table that uses during the moving image exposing operation]
Fig. 6 is the curve map by allocation table holding member 250 power division tables that keep, that use during the moving image exposing operation that illustrates according to the embodiment of the invention.Because this power division table that uses during the moving image exposing operation basically with the policer operation shown in Fig. 3 during the power division epiphase that uses with, so omit its detailed description here.It should be noted that Fig. 6 shows the power characteristic 361 to 363 that corresponds respectively to power characteristic shown in Fig. 3 and allocation priority zone and distributes priority area A31 and A32.
During the moving image exposing operation, the image device reception light in the image-forming block 181 also produces photographic images continuously, and therefore importantly makes focusing consistent with the object that will take all the time.When the driving of condenser lens 240 during this moving image exposing operation was slow, focusing was not consistent with the object that will take (particularly movable body), and therefore might can produce the moving image of only being made up of out-of-focus image.In addition, during the moving image exposing operation, because the fuzzy photographic images that influences that camera shake causes.It should be noted, causing under the image blurring situation that even can not proofread and correct described bluring when correcting camera shake, the right of priority that therefore drives condenser lens 240 is higher than the right of priority that gives drives camera jitter correction lens 220 because focusing is fuzzy.
Just because of this reason, during the moving image exposing operation, according to policer operation during give the identical preferred sequence of the priority of each operation and determine power division.
Under this mode, by a plurality of power division tables that kept according to the operation of imaging device 100 by allocation table holding member 250, interchangeable lens 200 can arrive each actuator with power division effectively.
It should be noted that the power division table shown in Fig. 3 to Fig. 6 is an example.Because the amount of power consumption and efficient change according to actuator, so for each interchangeable lens 200, the power division table also changes.For example, step motor lacks than the power that the DC motor consumes, and ultrasonic motor is more than the power that the DC motor consumes.In addition, even among the actuator of same type, when being driven object big large scale actuator of assembling power consumption when big, and when driven object is less, assemble the little small size actuator of power consumption.In addition, among the actuator of same type, the high-level efficiency actuator provide for power consumption than large driving force, poor efficiency are provided but the actuator etc. of high driving degree of accuracy is provided.Even under the different situation of the actuator that for each interchangeable lens, is assembled to interchangeable lens 200, distribute power according to the priority order that gives each operation shown in Fig. 3 to Fig. 6, thereby make and effectively power division to be arrived each actuator.
Though the above description hypothesis of Fig. 3 to Fig. 6 is the situation that drives all actuators in the interchangeable lens 200 simultaneously, this property of should in no way limit ground is understood.For example, suppose following situation: provide the situation of 4000mW power to interchangeable lens 200, and only drive condenser lens 240 and camera shake correction lens 220.In this case, for example, can expect a kind of like this power division table, wherein only the position is kept power to be provided to aperture driving actuator 231 and with remaining power division to focus control actuator 241 and camera shake correction actuator 221.
Though above description for Fig. 3 to Fig. 6 keeps the situation of a plurality of power division tables at allocation table holding member 250, makes an explanation to this property of should in no way limit.For example, allocation table holding member 250 can keep single power division table, and determines power division based on the amount of single power division table and interchangeable lens supply power.Replacedly, allocation table holding member 250 can keep the degree (is fixed value to each operator scheme) of distribution according to a plurality of operator schemes, and can distribute the fixing quantity of power that be provided to interchangeable lens 200 according to operator scheme.
[example of the operation of imaging system]
Next, operation according to the imaging system 10 of the embodiment of the invention is described with reference to the accompanying drawings.
Fig. 7 illustrates when by carry out when taking rest images the process flow diagram of supply power hand-off process example according to the imaging device 100 of the embodiment of the invention.Fig. 7 shows when carrying out the operation of the pattern of selecting to be used to take rest image as the user example of the process when described pattern end.
At first, judge whether to be provided for taking the pattern (rest image screening-mode) (step S901) of rest image by control assembly 120.Then, if judgement is not provided with rest image screening-mode (step S901), then handles and return step S901 to wait for, till being provided with the rest image screening-mode.
On the other hand, if judgement is provided with rest image screening-mode (step S901), then analyze the operation (step S902) of imaging devices 100 by control assembly 120.Then, based on analysis result, calculate the required power (step S903) of imaging device 100 by control assembly 120.Next, based on the power that calculates, determine that by the interchangeable lens supply power parts 140 calculate the power (step S904) that can be provided to interchangeable lens 200.
Then, analysis result and the power that can be provided to interchangeable lens 200 based on to imaging device 100 operations provide parts 130 and interchangeable lens supply power to determine that parts 140 provide operation mode information and interchangeable lens supply power information (step S905) by the main body operation information.Subsequently, based on interchangeable lens supply power information, switch the power (camera lens supply power) (step S907) that is provided to interchangeable lens 200 by interchangeable lens power supply parts 150.
After this, judged whether to carry out to finish the operation (step S909) of rest image screening-mode by control assembly 120.Then, if judge the operation (step S909) that does not finish the rest image screening-mode, then handle and return step S902.
On the other hand, if judge the operation (step S909) of having carried out finishing the rest image screening-mode, the supply power hand-off process when then taking rest image finishes.
Fig. 8 illustrates to carry out the process flow diagram that power division when taking rest images is handled example according to the embodiment of the invention by interchangeable lens 200.Fig. 8 shows from interchangeable lens 200 from imaging device 100 examples that obtain operation mode information and the interchangeable lens supply power information assigning process up to based on the information distribution power that obtained the time.
At first, by distributing power to determine that parts 260 obtain operation mode information and interchangeable lens supply power information (step S911).Then, based on the operation mode information of being obtained, by distributing power to determine that parts 260 obtain power division table (step S912).It should be noted that step S911 is the example of obtaining step.
Then, based on power division table that is obtained and interchangeable lens supply power information, by distributing power to determine parts 260 definite distribution (step S913) that will be provided to the power of each actuator.Subsequently, based on determined distribution, distribute the power (S914) that provides from imaging device 100.Then, the assigning process of interchangeable lens 200 finishes.What should be noted that is that step S913 is the example of determining step.
Under this mode, in an embodiment of the present invention, determine to give the degree of priority of the operation of each actuator based on operator scheme and the power that is provided to interchangeable lens, thereby allow to come effective driving actuator according to the size of the power that provides.
Now, will describe the example that how effectively to drive camera lens according to the embodiment of the invention, compare with operation simultaneously according to the actuator of correlation technique during image taking.
Under situation according to the imaging device (executed in compact digital cameras) of the integrated camera lens of correlation technique, exclusively drive a plurality of actuators in the camera lens, surpass the power that is provided to camera lens with the power consumption that prevents actuator.For example,, at first, all power are provided to the actuator that drives condenser lens, thereby condenser lens is urged to target location (aperture does not move) for mobile focusing lens and aperture.Then,, then all power are provided to the actuator that drives aperture, thereby aperture is set to target opening (condenser lens does not move) in case condenser lens moves to the target location.
Because no matter provide how much power all to carry out this exclusiveness control, so, can waste the unnecessary time for example moving under the situation of two actuators to big must being enough to of quantity of power that camera lens provides to camera lens.
When embodiments of the invention are applied to this executed in compact digital cameras,, power is assigned to a plurality of actuators simultaneously based on the degree of priority of a plurality of actuators that change along with the operational state change of executed in compact digital cameras.This makes can drive a plurality of actuators simultaneously with corresponding driving power.
At the lens unit (interchangeable lens) according to correlation technique is under the situation of tradable digital single lens reflex camera, has the interchangeable lens that different capacity consumes in order to adapt to, and all the time more high-power amount is provided to interchangeable lens.These feasible a plurality of actuators that can drive simultaneously in the interchangeable lens with maximum consumption of power.
This driving method makes and must make the size of the power supply in the imaging device bigger, thereby guarantees to provide bigger quantity of power for interchangeable lens always.This hinders the miniaturization of power supply when producing the compact camera main-body.
When embodiments of the invention are applied to this digital single lens reflex camera, can effectively drive simultaneously a plurality of actuators, or even make under the less situation of the quantity of power that is provided to interchangeable lens in miniaturization owing to power supply.
It should be noted, embodiments of the invention are for example understood and are used to realize example of the present invention, and, be corresponding mutually between the content of the definition invention of describing in content of describing in the embodiments of the invention and the claim as what describe in detail in embodiments of the present invention.Equally, also be corresponding mutually between the content of the definition invention of describing in the claim and the content of embodiments of the invention description, it is identical that the content in the described embodiments of the invention is used the name in the content of inventing with definition.Yet, it should be noted, the invention is not restricted to these embodiment, can by being carried out various modifications, embodiment realize the present invention without departing from the present invention.
Can be understood as method with reference to the treatment step that the embodiment of the invention is described, perhaps can be understood as the program or the stored program recording medium that cause computing machine to carry out a series of these steps with a series of these steps.For example can use compact disk (CD), mini disk (MD), digitizing multi-purpose disk (DVD), storage card, Blu-ray disc (Blue-ray Disc, registered trademark) etc. as this recording medium.
The disclosed subject content of Japanese priority patent application JP 2010-122233 that the subject content that the application comprises relates on May 28th, 2010 to be submitted in Jap.P. office, its full content is incorporated into way of reference in view of the above.
It should be appreciated by those skilled in the art, in the scope of appended claims and equivalent thereof, can carry out various modifications, combination, sub-portfolio and replacement according to design requirement and other factors.

Claims (15)

1. interchangeable lens comprises:
Obtain parts, the described parts that obtain obtain the amount of supply power from the imaging device that is attached with described interchangeable lens, and obtain the relevant operation information of operation with described imaging device during described supply power is provided; And
Determine parts, described definite parts are based on the amount of the described supply power that is obtained and the operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
2. interchangeable lens according to claim 1, wherein in the time will driving described optical component, described definite parts determine to be assigned to the power of each driver part that drives each optical component.
3. interchangeable lens according to claim 1 also comprises:
Holding member, described holding member and described operation information keep power allocation information relatively, the relation between the power that described power allocation information indication supply power amount and each driver part use,
Wherein said definite parts obtain power allocation information corresponding to described operation information from described holding member, and determine the power that will distribute based on the amount of power allocation information that is obtained and described supply power.
4. interchangeable lens according to claim 1, wherein:
Described optical component comprises condenser lens and is used for the correcting lens of correcting camera shake; And
Described driver part comprises first driver part that drives described condenser lens, and second driver part that drives described correcting lens.
5. interchangeable lens according to claim 4, wherein when by the described imaging device of the operation information appointment of being obtained be operating as policer operation the time, described definite parts give described first driver part aspect power division right of priority is higher than the right of priority that gives described second driver part.
6. interchangeable lens according to claim 4, wherein:
Described optical component also comprises aperture;
Described driver part also comprises the 3rd driver part that drives described aperture; And
When the operation of the described imaging device of the operation information appointment of being obtained was policer operation, described definite parts give described the 3rd driver part aspect power division right of priority was lower than the right of priority that gives described second driver part.
7. interchangeable lens according to claim 4, during the operation during when the exposure beginning, described definite parts give described second driver part aspect power division right of priority is lower than the right of priority that gives described first driver part when pressing shutter release button in the operation of described imaging device of wherein working as the operation information appointment of being obtained.
8. interchangeable lens according to claim 4, when the operation of wherein working as the described imaging device of the operation information appointment of being obtained was a exposing operation when taking rest image, described definite parts were higher than the right of priority that gives described first driver part in the right of priority that gives described second driver part aspect the described power division.
9. interchangeable lens according to claim 4, wherein when described supply power during less than the predetermined electric power amount, described definite parts are higher than the right of priority that gives described first driver part in the right of priority that gives described second driver part aspect the described power division.
10. interchangeable lens comprises:
Obtain parts, describedly obtain parts obtain supply power from the imaging device that is attached with described interchangeable lens amount; And
Determine parts, described definite parts are based on the amount of the described supply power that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
11. an interchangeable lens comprises:
Obtain parts, the described parts that obtain obtain the operation information relevant with the operation of described imaging device during providing supply power from the imaging device that is attached with described interchangeable lens; And
Determine parts, described definite parts are based on the operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
12. an imaging system comprises:
Imaging device; And
Interchangeable lens,
Wherein said imaging device comprises:
The operation information transmit block, described operation information transmit block to attached described interchangeable lens send the operation information relevant with the operation of described imaging device, and
Supply power is determined parts, and described supply power determines that the power consumption of power that parts provide according to power supply and described imaging device determines to be provided to the amount of the supply power of described interchangeable lens, and
Described interchangeable lens comprises:
Obtain parts, describedly obtain the amount that the supply power that is provided is provided parts, and the operation information that is sent, and
Determine parts, described definite parts are based on the amount of the described supply power that is obtained and the described operation information that is obtained, and in a plurality of driver parts that drive a plurality of optical components each, determine to be assigned to the power of described a plurality of driver parts.
13. an imaging device comprises:
The operation information transmit block, described operation information transmit block to attached interchangeable lens send the operation information relevant with the operation of described imaging device, and
Supply power is determined parts, and described supply power determines that the power consumption of power that parts provide according to power supply and described imaging device determines to be provided to the amount of the supply power of described interchangeable lens.
14. a method of controlling interchangeable lens comprises the steps:
Obtain the amount of supply power from the imaging device that is attached with described interchangeable lens, and obtain the relevant operation information of operation with described imaging device during described supply power is provided; And
Based on the amount of the supply power that is obtained and the operation information that is obtained,, determine to be assigned to the power of described a plurality of driver parts in a plurality of driver parts that drive a plurality of optical components each.
15. program that causes computing machine to carry out following steps:
Obtain the amount of supply power from the imaging device that is attached with described interchangeable lens, and obtain the relevant operation information of operation with described imaging device during described supply power is provided; And
Based on the amount of the supply power that is obtained and the operation information that is obtained,, determine to be assigned to the power of described a plurality of driver parts in a plurality of driver parts that drive a plurality of optical components each.
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US20110292270A1 (en) 2011-12-01
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